The term SKYLINE HIDER can be summarized as a job that involves reducing the visibility of SMOG in the sky. SMOG is a type of air pollution that is created by the burning of fossil fuels and other pollutants. It is characterized by a thick, hazy layer of smoke that can obscure the skyline of a city. The job of a SKYLINE HIDER is to reduce the visibility of SMOG in the sky, often through the use of specialized equipment or techniques.